littlebobert

// before the change

BAPromise *promise = [self methodThatReturnsAPromise];
[promise then:^id(id obj) {
    NSLog(@"1st");
    return [[self otherMethodThatReturnsAPromise] then:^id(id obj) {
        NSLog(@"2nd");
        return obj;
    }];
}];

littlebobert

[[[AMPSession currentSession] getRefreshToken] done:^(AMPTokenResponse *obj) {
    NSString *token = obj.token;
    NSURL *modifieldURL = [Configuration sharedConfiguration].AMPEnvironment == IHRConfigurationPlatformAMPEnvironmentProd ? url : [NSURL URLWithString:@"https://sandbox.iheart.com"];
    NSURLComponents *components = [NSURLComponents componentsWithURL:modifieldURL resolvingAgainstBaseURL:false];
    NSURLQueryItem *regSync = [NSURLQueryItem queryItemWithName:@"regSyncToken" value:token];
    components.queryItems = @[regSync];
    completionHandler(components.URL);
} rejected:^(NSError *error) {
    completionHandler(url);
}];

littlebobert

guard let path = Bundle.main.path(forResource: "MLK", ofType: "mp3") else {
    return
}
let url = URL(fileURLWithPath: path)

player = AVAudioPlayerNode()

audioEngine.attach(player)

do {

littlebobert

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"GuideCell" forIndexPath:indexPath];
    if (cell == nil) {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:@"GuideCell"];
    }
    Guide *guide = [self.guides objectAtIndex:indexPath.row];
    cell.textLabel.text = guide.name;
    cell.detailTextLabel.text = @"xxx";
    return cell;

littlebobert

import Foundation

extension String {
    func containsOnlyWhitespace() -> Bool {
        let pattern = "^[\\s]+$"
        let regex = try! NSRegularExpression(pattern: pattern, options: .DotMatchesLineSeparators)
        let matches = regex.matchesInString(self, options: .ReportCompletion, range: NSMakeRange(0, self.characters.count))
        return matches.count > 0
    }
}

littlebobert

import UIKit
import Foundation

enum Direction {
    case Clockwise
    case Counterclockwise
}

class ViewController: UIViewController {
    

littlebobert

UIView.animateWithDuration(1, animations: {
    self.littleView.transform = CGAffineTransformRotate(CGAffineTransformIdentity, CGFloat(M_PI))
}) { (completed) in
    UIView.animateWithDuration(1, animations: {
        self.littleView.transform = CGAffineTransformRotate(CGAffineTransformIdentity, CGFloat(M_PI))
    })
}

littlebobert

extension String {
    func numericValue() -> Any? {
        if let doubleValue = Double(self) where self.localizedStandardContainsString(".") {
            return doubleValue
        } else if let intValue = Int(self) {
            return intValue
        } else {
            return nil
        }
    }

littlebobert

extension String {
    subscript (i: Int) -> Character {
        return self[self.startIndex.advanceBy(i)]
    }
}

littlebobert

func memoize<T: Hashable, U>(body: (T -> U, T) -> U) -> (T -> U) {
    
    var cache = [T : U]()
    
    func result(x: T) -> U {
        if let q = cache[x] { return q }
        let r = body(result, x)
        cache[x] = r
        return r
    }